Turbine-driven swimming pool cleaning apparatus and method
A swimming pool cleaner is driven along a submerged surface by water and debris flowing past a turbine positioned between an inlet and outlet of the cleaner. Rollers are rotatably carried on the bottom of the cleaner and forward and aft the proximate an inlet port. The rollers in combination with lower side wall portions of the housing form a plenum for water and enhance adherence of the pool cleaner to the submerged pool surface being cleaner. A hose connector operable with an outlet port is angled toward the forward direction of movement of the pool cleaner such that a suction hose will be placed slightly ahead of the pool cleaner when climbing a side wall surface to provide a weight for keeping the cleaner below the water surface and thus prevent an undesirable sucking of air at the inlet.
This application claims priority to and is a continuation of U.S. patent application Ser. No. 14/017,758, filed on Sep. 4, 2013 now U.S. Pat. No. 9,032,575, which itself claims priority to U.S. Provisional Patent Application Ser. No. 61/720,208, filed on Oct. 30, 2012 for Turbine-Driven Swimming Pool Cleaning Apparatus and Method, the disclosures of which are hereby incorporated by reference herein in their entirety, and all commonly owned.
FIELD OF INVENTIONThe present invention generally relates to swimming pool cleaners, and more particularly to an automatic pool cleaner driven by a flow of water through a turbine engine for providing movement along and cleaning of submerged surfaces of a swimming pool.
BACKGROUNDSubmersible pool cleaners having driving mechanisms carried within a housing that engages the submerged surface of the pool are generally well known, such as the three or four wheeled swimming pool pressure cleaner with internal steering mechanism described in U.S. Pat. Nos. 6,782,578 and 6,854,148 to Rief et al., the disclosures of which are herein incorporated by reference in their entirety. Various pool cleaners are turbine driven as in the aforementioned patents including a turbine motor as described in U.S. Pat. No. 6,292,970, the disclosure of which are herein incorporated by reference in their entirety. Further, also generally known are the problems associated with debris clogging fluid flow passages, wearing cleaner components rendering the cleaner ineffective or unusable, and the difficulty for a consumer attempting to replace such worn components.
As is well known, and as emphasized in U.S. Pat. No. 6,131,227 to Rief et al, the disclosure of which are herein incorporated by reference in their entirety, the proper functioning of swimming pool cleaners typically rely on a skirt bordering and extending downwardly from the body of the pool cleaner. The skirt generally maintains an effective fluid suction within a plenum of water proximate the inlet to the cleaner, generally dislodges loose debris, accommodates uneven surfaces, provides a fluid suction force to keep the pool cleaner pressed against the submerged surface and yet allow the pool cleaner to travel up and across submerged steeply inclined and vertical surfaces.
There remains a need to improve upon performance of the submersible pool cleaner such that the pool cleaner can effectively and efficiently automatically navigate over obstacles such as bottom drains and larger debris, and be able to upright itself in the event it should fall on its back. Yet further, when debris flows through the turbine, it is desirable to have the debris work its way through the cleaner while maintaining maximum power without compromising function, and without having to stop automatic operation and access the housing to clean the debris. Those experienced with submersible pool cleaners appreciate that it is desirable to keep the cleaner below the water surface to prevent it from sucking air as it climbs vertical walls of the pool.
Embodiments of the present invention herein described provide an efficiently run submersible cleaner which includes components that are easily replaceable by the consumer and operate to meet such needs.
SUMMARYA swimming pool cleaner according to the teachings of the present invention may comprise a turbine motor driven by a flow of water for operation of the pool cleaner along a submerged surface to be cleaned. The turbine comprises a turbine housing having a rotor rotatably mounted in a chamber to provide a flow path for water and debris around the rotor. Turbine vanes may be rigidly attached about and extend from a periphery of the turbine rotor. A valve element may be located proximate the vanes and inlet port such that the valve element is movable with respect to distal ends of the turbine vanes to allow passage of debris of substantial size through the turbine. The pool cleaner may include a roller positioned on a bottom forward portion thereof proximate the inlet port and a retractable element, such as an elongate flap or second roller, pivotably carried by the pool cleaner and positioned on a bottom rearward portion proximate the inlet port. The roller and retractable element, in combination with side wall portions of the housing of the cleaner, form a plenum of water enhancing adherence of the pool cleaner to the pool surface.
A hose connector operable with an outlet port is angled toward the forward direction of movement of the pool cleaner such that a hose connected to the hose connector will be placed slightly ahead of the pool cleaner when climbing a side wall surface. A water filled hose provides weight for keeping the cleaner below the water surface and thus prevents a sucking of air at an inlet port.
For a fuller understanding of the invention, reference is made to the following detailed description, taken in connection with the accompanying drawings illustrating various embodiments of the present invention, in which:
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown by way of example only. This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout.
Referring initially to
As illustrated with reference to
With continued reference to
The pool cleaner 10 includes a drive assembly 56 which uses the flow of water through the chamber 28 to create the rotary motion of the turbine 24 which is transferred to the wheels 14, 16 by a drive train 58 as illustrated with continued reference to
As above described, the turbine 24 is the propulsion system of the pool cleaner 10. In typical pool cleaners, there is always a precise balance in the distance between the turbine and the wall 30 housing the turbine. If the distance is to close, debris will get trapped in between. If the distance is too great the turbine 24 will lose power and will not function as desired. With reference again to
With reference again to
The cam 78 has portions of greater 82 and the lesser 76 radii and is rotatable by the rotor 38 of the turbine 24 through reduction gears 84. The drive shaft contactor 80 extends from the cam 78 to the first wheel 14 and intermittently interrupts rotation of the first wheel and reverses its direction of rotation to thus cause a change in direction of movement of the pool cleaner 10. With reference again to
A tread element 88 is carried about the periphery of the drive wheels 14, 16 to provide traction on the pool surface 18 being cleaned. The tread element 88 in combination with the size of the drive wheels 14, 16 is larger in diameter than the housing 12 is high. This allows the pool cleaner 10 to ride over commonly encountered impediments and obstacles in a swimming pool.
With reference again to
With reference again to
With continued reference to
With reference again to
With reference again to
As above described with reference to the first and second rollers 100, 112, with use of the wiper element 92 instead of the second roller 112, the side wall portions 106, 108, front/first roller 100 and the wiper element 92 create the plenum 118 by essentially forming a skirt around the inlet port 32 enabling the cleaner 10 to have enhanced suction and thus enhanced attachment to the pool surface 18. Since the rollers 100, 112 move freely, they are able to retract within the outside perimeter 110 of the wheels 14, 16 and have little resistance which enables the cleaner 10 to desirably transition into steep or angled walls. As above described, the rollers 100, 112 having multiple segments moving independently of one another further enable them to conform to uneven surfaces in the pool. This also enables the cleaner 10 to navigate over obstacles such as bottom drains and larger debris. The rollers or roller and wiper in combination with the housing lower side wall portions keep the plenum substantially closed, thus providing a desirable flow and collection of debris from beneath the pool cleaner by a suction action.
As illustrated with reference again to
With continued reference to
As will come to the mind of those skilled in the art, now having the benefit of the teachings of the present invention, one embodiment of the wiper element 92 may include the aperture as the slot 136 carried within the proximal end of the wiper element 92 and slidable along a fixed hinge pin, as illustrated with reference to
Typical pool cleaners that are able to transition onto the pool side walls have problems climbing above the water line and therefore suck air which is well known to be detrimental for the pump. The embodiment of the pool cleaner 10, herein described by way of example, solves this problem by forwardly angling 138 the hose connector 22 relative to an upright position 140 of the pool cleaner during normal operation, as illustrated with reference again to
As illustrated with reference again to
Many modifications and other embodiments of the invention will come to the mind of those skilled in the art now having the benefit of the teachings presented in the foregoing descriptions and associated drawings. Therefore, it is understood that the invention is not to be limited to specific embodiments disclosed, and that modifications and embodiments are intended to be included within the scope of the appended claims.
Claims
1. A pool cleaner driven by a flow of water therethrough for operation along a submerged surface to be cleaned, the pool cleaner comprising:
- a housing having an inlet port and an outlet port for having water and debris pass therethrough;
- at least two wheels rotatably carried by the housing for rolling along a submerged surface to be cleaned, wherein an outer diameter of at least one of the at least two wheels defines a perimeter thereof;
- a first roller positioned on a bottom portion of the housing forward the inlet port, the first roller having a tubular shape defined by an outer surface and an inner surface;
- a first axle carried between opposing side wall portions of the housing, wherein the inner surface of the first roller is slidably rotatable about the first axle, and wherein an outside dimension of the first axle is sufficiently smaller than a diameter of the inner surface for permitting the first roller to extend beyond the perimeter and operable for retracting the first roller within the perimeter responsive to movement along the submerged surface;
- a second axle carried between opposing side wall portions of the housing; and
- a second roller positioned at the bottom portion of the housing aft the inlet port and extending between the opposing side wall portions, and moveable about the second axle, the second roller moveable from outside the perimeter for contact with the surface to be cleaned to inside the perimeter for permitting the second roller to roll along uneven portions of the submerged surface to be cleaned, wherein the first and second rollers, in combination with the opposing side wall portions of the housing, form a plenum for water, the plenum enhancing adherence of the pool cleaner to the submerged surface to be cleaned.
2. The pool cleaner according to claim 1, wherein the at least two wheels comprise only two wheels, each rotatable about a common axis of rotation.
3. The pool cleaner according to claim 1, wherein the first roller comprises multiple roller portions, and wherein each of the multiple roller portions moves independently of one another about the first axle for generally conforming to the uneven portions of the surface to be cleaned.
4. The pool cleaner according to claim 1, further comprising a forward partition and an aft partition extending between the opposing side wall portions, the forward partition fixed forward the inlet port and the aft partition fixed aft the inlet port, wherein free ends of the partitions extend toward the perimeter and are spaced therefrom, and wherein the outer surface of the first roller is generally maintained out of contact with the forward partition.
5. The pool cleaner according to claim 1, wherein the first axle comprises a rib having an elongate cross section, the rib extending radially outward and substantially along a full length of the axle.
6. The pool cleaner according to claim 1, wherein the second roller comprises multiple second roller portions independently moveable about the second axle.
7. The pool cleaner according to claim 6, wherein the second roller comprises a tubular shape, and wherein the tubular shaped second roller includes an inner surface loosely slidable about the second axle.
8. The pool cleaner according to claim 1, further comprising a turbine including:
- a water flow chamber formed by a chamber wall, the water flow chamber extending between the inlet and outlet ports;
- a rotor rotatably mounted in the chamber and spaced from the chamber wall at all positions thereabout to provide a flow path for water and debris past the rotor; and
- a plurality of rigid vanes fixedly attached to and extending from the rotor.
9. The pool cleaner according to claim 8, further comprising a valve element having a distal end movable with respect to the vanes between a first position proximate free ends of the vanes during rotation thereof and a second position spaced from the vanes to allow passage of debris through the turbine.
10. The pool cleaner according to claim 1, further comprising a hose connector operable with the outlet port, wherein the hose connector is angled toward a forward direction of movement of the pool cleaner during operation thereof, whereby a hose connected to the hose connector will be placed slightly ahead of the housing when climbing a generally vertical wall portion of the surface to be cleaned, the hose having water therein thus providing increased weight for keeping the housing below a water surface level of a pool to prevent a sucking of air at the inlet port.
11. A pool cleaner for operation along a submerged surface to be cleaned, the pool cleaner comprising:
- a housing having an inlet port and an outlet port for having water and debris pass therethrough;
- at least two wheels rotatably carried by the housing for rolling along a surface to be cleaned, wherein an outer diameter of at least one of the at least two wheels defines a perimeter thereof;
- a roller positioned on a bottom portion of the housing forward the inlet port, the roller having a tubular shape defined by an outer surface and an inner surface;
- a first axle carried between opposing side wall portions of the housing, wherein the inner surface of the roller is slidably rotatable about the first axle, and wherein an outside dimension of the first axle is sufficiently smaller than a diameter of the inner surface of the roller for permitting the roller to extend beyond the perimeter and for retracting the roller within the perimeter responsive to movement along the submerged surface; and
- a retractable element positioned at the bottom portion of the housing aft the inlet port, the retractable element extending between the opposing side wall portions, the retractable element moveable from outside the perimeter for contact with the surface to be cleaned to inside the perimeter for permitting the retractable element to slide along uneven portions of the surface to be cleaned, wherein the retractable element and the roller in combination with the opposing side wall portions of the housing form a plenum for water and enhancing adherence of the pool cleaner to the surface to be cleaned.
12. The pool cleaner according to claim 11, wherein the at least two wheels comprise only two wheels.
13. The pool cleaner according to claim 11, wherein the roller comprises multiple roller portions, and wherein each of the multiple roller portions moves independently of one another about the first axle for generally conforming to the uneven portions of the submerged surface to be cleaned.
14. The pool cleaner according to claim 11, further comprising a forward partition and an aft partition extending between the opposing side wall portions, the forward partition fixed forward the inlet port and the aft partition fixed aft the inlet port, wherein free ends of the partitions extend toward the perimeter and are spaced therefrom.
15. The pool cleaner according to claim 14, wherein the outer surface of the roller is maintained out of contact with the forward partition.
16. The pool cleaner according to claim 11, further comprising a second axle generally extending between the opposing side wall portions, wherein the retractable element comprises a flap rotatable about the second axle, and wherein at least one of the second axle and the flap is slidable within slots formed within at least one of the side wall portions and the flap.
17. The pool cleaner according to claim 11, wherein the roller comprises a first roller and the retractable element comprises a second roller.
18. The pool cleaner according to claim 17, wherein each of the first and second rollers comprises multiple tubular roller portions.
19. The pool cleaner according to claim 11, further comprising a turbine for providing a driving force to at least two of the at least two wheels.
20. The pool cleaner according to claim 11, further comprising a hose connector operable with the outlet port, wherein the hose connector is angled toward a forward direction of movement of the pool cleaner during operation thereof, whereby a hose connected to the hose connector will be placed slightly ahead of the housing when climbing a generally vertical wall portion of the surface to be cleaned, the hose having water therein thus providing increased weight for keeping the housing below a water surface level of a pool to prevent a sucking of air at the inlet port.
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Type: Grant
Filed: Apr 14, 2015
Date of Patent: Dec 22, 2015
Patent Publication Number: 20150218837
Inventors: Pavel Sebor (Heathrow, FL), Robert Sebor (Sanford, FL)
Primary Examiner: Mark Spisich
Application Number: 14/685,861
International Classification: E04H 4/16 (20060101);